// HTMLParser Library $Name: v1_6 $ - A java-based parser for HTML
// http://sourceforge.org/projects/htmlparser
// Copyright (C) 2003 Derrick Oswald
//
// Revision Control Information
//
// $Source: /cvsroot/htmlparser/htmlparser/src/org/htmlparser/filters/NodeClassFilter.java,v $
// $Author: derrickoswald $
// $Date: 2005/05/15 11:49:04 $
// $Revision: 1.4 $
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; either
// version 2.1 of the License, or (at your option) any later version.
//
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
//

package org.htmlparser.filters;

import org.htmlparser.Node;
import org.htmlparser.NodeFilter;

/**
 * This class accepts all tags of a given class.
 */
public class NodeClassFilter implements NodeFilter {
	/**
	 * The class to match.
	 */
	protected Class mClass;

	/**
	 * Creates a NodeClassFilter that accepts Html tags.
	 */
	public NodeClassFilter() {
		this(org.htmlparser.tags.Html.class);
	}

	/**
	 * Creates a NodeClassFilter that accepts tags of the given class.
	 * 
	 * @param cls
	 *            The class to match.
	 */
	public NodeClassFilter(Class cls) {
		mClass = cls;
	}

	/**
	 * Get the class to match.
	 * 
	 * @return Returns the class.
	 */
	public Class getMatchClass() {
		return (mClass);
	}

	/**
	 * Set the class to match.
	 * 
	 * @param cls
	 *            The node class to match.
	 */
	public void setMatchClass(Class cls) {
		mClass = cls;
	}

	/**
	 * Accept nodes that are assignable from the class provided in the
	 * constructor.
	 * 
	 * @param node
	 *            The node to check.
	 * @return <code>true</code> if the node is the right class,
	 *         <code>false</code> otherwise.
	 */
	public boolean accept(Node node) {
		return ((null != mClass) && mClass.isAssignableFrom(node.getClass()));
	}
}
